Draw magnetic field lines due to a current carrying circular wire placed
in a horizontal plane.

Draw magnetic field lines due to a U-shaped magnet?

On what factors does the magnitude of magnitude of magnetic field at the centre of a current carrying circular wire depends.

A long straight horizontal cable carries a current of 2.5 A in the direction 10^@ south of west to 10^@ north of east. The magnetic meridian of the place happens to be 10^@ west of the geographic meridian. The earth’s magnetic field at the location is 0.33 G, and the angle of dip is zero. Locate the line of neutral points (ignore the thickness of the cable)? (At neutral points, magnetic field due to a current-carrying cable is equal and opposite to the horizontal component of earth’s magnetic field.)

Meena draw magnetic field lines of field close to the axis of a current carrying circular loop. As the moves away from the centre of the circuit loop she observes that the lines keep on diverging. How will you explain the observations.

With the help of which rule can you find the direction o magneitc field due to a current carrying wire?Explain the rule.